Thank goodness, J.K. Rowling has resisted the temptation to spin out the Harry Potter universe endlessly, now that she's got more money than the Queen. Rowling has inked a deal for a new adult novel, to be published by Little, Brown. In a statement, she said:

With the final Harry Potter book coming to the screen this week, the Potter pipeline's about…
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Although I've enjoyed writing it every bit as much, my next book will be very different to the Harry Potter series.... The freedom to explore new territory is a gift that Harry's success has brought me, and with that new territory it seemed a logical progression to have a new publisher. I am delighted to have a second publishing home in Little, Brown, and a publishing team that will be a great partner in this new phase of my writing life.

Let's hope it's still in the fantasy/science fiction wheelhouse. Either way, we can't wait to read it! [Publishers Weekly]